Cameron Melly's century ensured the Emerging Warriors completed a 10-wicket win over Munster Heat at Eglinton.
His run-a-ball 101 (11 fours) gave the Warriors a 167-run first innings advantage as he shared stands of 54 with Ryan Nolan (26) for the 7th wicket and 83 for the 8th with Sam Haslett (30*).
Zubair Khan took four wickets and William Shields two.
Munster looked as if they could salvage a draw as Awais Saghir (57) and Sunil Gautam (33) shared a second wicket stand of 96 to take them to 110 for 1.
However, four wickets for Gavin Roulston saw them collapse to 158 for 9.
William Shields (21*) struck some lusty blows to ensure the NW had to bat a second time, but Ryan Clarke (19*) knocked off the 22 required in just 25 balls.
In the other game, there wasn't much to separate the sides as the match ended in a draw.
Half centuries for Chris De Freitas and Gavin Hoey were the highlights for Leinster Bolts, while for the Emerging Knights, Jordan Neill hit five sixes in a 48 as he returned to competitive action following his shoulder injury.
Cian Robertson took seven wickets across both innings and Harry Dyer five.
The Knights lead the table by 1 point ahead of the Warriors who they meet next Tuesday at Eglinton.
Leinster can pip both if they beat Munster Heat at The Mardyke with enough points if the other clash ends in a stalemate.